[fragmede]

A very select group has tried for not very long, but I think the most gains in efficiency are going to come from giving bipedal robots rollerblades.

[hwillis]

Absolutely correct, evolution will never ever beat a 10 cent ABEC-7 bearing. Skateboards really changed manufacturing by making a specific size of wildly precise bearing incredibly cheap. One day a robot will be able to step directly onto ice skates, but meanwhile I'm looking forward to the blooper reel because it's gonna be funny as hell

[marcosdumay]

As long as they have decent brakes... Because stairs and obstacles exist, and getting over them beats overall efficiency almost every time.